package _9代码块;

public class TestDemo {

	public static void main(String[] args) 
	{
	
		
		ClassA c1 = new ClassA();
		c1.x = 100;
		c1.y = 200;
		
		ClassA c2 = new ClassA(300,400);
		
		System.out.println(c1);
		System.out.println(c2);
		
		
		ClassA c3 = new ClassA();
		System.out.println(c3);
		
	}

}